Chewing Raw Bones - help

Depending on the size of the dog, you want stuff like chicken wings, pork neck bones, pork hocks etc.
 
Heat changes the molecular structure of the bones and makes them more likely to splinter, that's when they become dangerous.  As with anything, there is always potential for problems, but they are miniscule.  Be sure to supervise when giving raw bones.

dogs can digest raw bone. Have you never done the "drop the raw chicken leg bone into acid" in science class? the bone gets rubbery and soft. That's what happens in the dog's stomach-- the acid breaks down the structure. If you cook the bone first, it dries out, the proteins denature, and you get a brittle difficult-to-digest substance. Folks who have had dogs eat cooked bones often report finding entire chunks of bone in the poop, while folks whose dogs eat raw bones report finding white chalk-like residue in the poop.
Anyway, the teeth cleaning mostly comes from teeth shearing through the meat attached to the bones. So you want bones big enough to force the dog to chew instead of swallowing whole, and that have plenty of meat on them.

Your dogs are little, right? That's what it looks like from the avatar.

My dog is "little," that is, she's only 45 lbs. She does really well with a frozen chicken thigh. She chews up the bone, crunches right through it. I give it frozen because then she is far less likely to gulp it. She's not a gulper. I'd give her ribs but red meat is waaaaaaaaaaay expensive up here in Alaska and people buy that for themselves at ridiculous prices!

I think chicken is the way to go, that and soft rib bones. Dogs can break their teeth on the really hard leg bones of cows and other grazing animals, but then again, they can have a lot of fun chewing on those for long periods. You just have to keep an eye out and see how it goes. Those big legbones don't digest even when raw, either, (the inside parts do, just the hard outside parts don't) so you don't want your dog chomping off huge chunks of hard bone. But your guys are so small I doubt they'd do that.

Try a frozen chicken wing, or even a thawed one. I think your dogs will loooove it!

The smallest is 25 pounds and the biggest is about 48 pounds.

I guess I'm concerned that by eating the bones, that they might have problems... I'm ok with them chewing meat off a big bone, but the idea of letting them ingest a bone scares me.